Device for escapement regulation of pendulum clocks



A. LAUFFER 1,718,653

' DEVICE FOR ESCAPEMENT REGULATION OF PENDULUI CLOCKS June 25, 1929.

Filed Aug. 9, 1927 FIE-.2. I H53.

- INVNTOK WW Patented June 25, 1929.

UNITED STATES PATENT OFFICE.

ANDREAS LAUFFER, OF SCHWENNIN GEN, GERMANY, ASSIGNOR TO THE FIRM FRIED- RICH MAUTHE G. M. B. H., 015 SCHWENNINGEN, GERMANY.

DEVICE FOR ESCAPEMENT REGULATION OF PENDULUM CLOCKS.

Application filed August 9, 1927, Serial No. 211,766, and in Germany June 9, 1926.

The invention relates to a device for the escapement regulation of pendulum clocks of all kinds in order to avoid an uneven ticking noise, which as commonly known. originates when the a, chor which is conraicted to the pendulum by means of the anchor fork is not in a correct position relative to the teeth of the moving wheel.

lVith the aid of this invention the equalizing of the escapement and proper adj ustment for a regular pendulum beat may be effected very easily while the clock is running. It is consequently not nece -ary to have an expert to set the clock in mo ,ion and adjust the beat of the pendulum, but it is also of great advantage to the expert to have such simple means for adjusting and correcting the pendulum beat.

In the accompanying drawing the invention is illustrated in one form by way of example, in which Figure l is a side elevation, Figures 2 and 3 show different positions from the rear and Figure at is a front view of the dial plate with the means for regulating under the dial figure 12.

()n the anchor shaft a, to which the anchor i) is firmly connected, the crutch or anchor fork c is mounted in such a manner, that it is held thereon only by friction as is the usual practice for the purpose, that the pendulum, which (as not shown) is suspended in the ordinary way and engages loosely between the fork projections of the anchor fork c, transmits its movement to the latter. On the anchor shaft a the little arms 1: are firmly provided. in these little arms (2 the shaft f, which can be turned, is provided. Firmly connected to one end of theshaft the razcentric inc-ml g and on the other end the position lever 71. This position lever 2 can be so arranged that it can be easily reached either from in front, from the side or the rear of the clock. Figure 4 shows the arrangement in which the lever can be actuated from the dial plate side very easily. For this purpose the dial plate has a slot is in which the bent end of the lever 71) can be moved forward or backward. It is advisable to provide a scale next to the slot it. In order to make an adjustment of the anchor b to the escapement wheel 7', it is only necessary to move the position lever /z to the right or left. By means of this adjustment a partial turning is imparted to the shaft 7" and with it to the eccentric member Because of this partial turning of the eccentric member the anchor fork c and with it the pendulum is adjusted in regards to the anchor b as much as is required to give the clock a correct movement. The adjustment can always be made while the clock is running.

I claim:

1. A device in clocks for adjusting the beat of the pendulum and equalizing the escapement, comprising an anchor shaft, an anchor rigidly secured on this shaft, an anchor fork frictionaliy coi'inected with the said shaft and having upwardly extending arms, an eccentric member embraced by the arms of said fork, an arbor bearing the said member and disposed above the anchor shaft and supported by and secured on said anchor shaft, and a pointer at the end of the said arbor for turning the cccentric member and adjust i the anchor fork to the right or the left as I 2. In a device for adjusting the beat of the pendulum and equalizing the escapelncnt, comprising an anchor shaft, an auchor rigidfv secured on this shaft, an anchor fork having upwardly extending arms, frictional fastening means for connecting the fork to the shaft, an eccentric member embraced by the arms of the fork, an arbor bearing the said member and disposed above the anchor shaft, brackets secured on this anchor shaft for supporting the arbor, a pointer at the end of the said arbor for turning the eccentric member a d adjusting the anchor fork to the right or the left as the case may be, and dial plate having an aperture and an auxiliary scale adjacent the aperture, and through which aperture the end of said pointer projects.

In testimony whereof I afiix my signature.

ANDREAS LAUEFER. 

